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Finding the Fourth Proportional to 11,690.59, 16,129.01 and 6,653.55

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Solution

The fourth proportional to 11,690.59, 16,129.01 and 6,653.55 is: 9,179.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690.59 : 16,129.01 = 6,653.55 : x
  2. Step 2: Convert to fraction form
    11,690.59/16,129.01 = 6,653.55/x
  3. Step 3: Cross multiply
    11,690.59x = 16,129.01 × 6,653.55
  4. Step 4: Simplify right side
    11,690.59x = 107,315,141.22
  5. Step 5: Solve for x
    x = 107,315,141.22/11,690.59
  6. Step 6: Final answer
    x = 9,179.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.